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<1234567…34>
  • anyone got a nice clear pic of a Speccy keyboard?Im making a spectrum keyboard keyword reference widget for the OS X dashboard, basicly at the mo it's just gonna be a picture of a spectrum keyboard …

    ... having trouble finding a nice clear, reasonably high res picture to ...
    Sharopolis Sharopolis May 2005 Sinclair Miscellaneous
  • CLEAR does not RESTORE the DATA pointer??According to the Spectrum manual, one of the things that a CLEAR command does RESTORE the DATA pointer. Either it doesn't actually do this, or some…

    ... of the things that a CLEAR command does RESTORE the DATA ... program:
    [CODE]
    10 CLEAR 32767
    20 READ a ... first command it sees is CLEAR 32767, which should do a ... isn't restored by the CLEAR command.
    trellis trellis September 2006 Sinclair Basic
  • RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…

    In BASIC, type CLEAR 49999 then import the ... /> ; so look at the system variable PROG
    dec hl ; move ... DE
    and a ; clear the carry flag before
    ld (atflg),a ; clear AT flag
    rst 08h ... />
    ld h,$00 ; clear H
    ld l,a ...
    chev chev January 2007 Development
  • How do I clear only a specific area of a screen (quickly) in machine code ?I'm looking for a machine code routine which will clear the first 20 rows of the Spectrum's display (or any number of rows or columns) . I have found…

    ... code routine which will
    clear the first 20 rows of ... in memory), which can
    clear the top third, two thirds ... F

    The 'thirds' clear method is as follows :
    This runs extremely quickly, the clear appears to
    happen instantaneoulsy ...
    bobbyjaykid bobbyjaykid July 2007 Development
  • 41 Crash mags - free to a good home (Australia)I'm having a clear out and the following Crash magazines have to go. Their condition is a bit variable, all have seen some wear and tear, but all ar…

    I'm having a clear out and the following Crash ... /> Their condition is a bit variable, all have seen some wear ...
    Fred Fred August 2007 Sales
  • Fastest way to clear a screen.We haven't had an optimizing fun for some time, so let's have some: What's the fastest way to clear a screen (i.e., filling the 6912 bytes at 16384 w…

    ... 's the fastest way to clear a screen (i.e., filling ...
    Patrik Rak Patrik Rak February 2009 Development
  • How do I know where my C compiler is putting my variable?Let me show you my code. I am writing a Z80 emulator (z80.c) which sets up a bit of shared memory for communication with another process. Well, I got…

    ... shared memory, and initialises a variable bl_ctrl to 1. It sleeps ... address spaces, so that the variable is not located in the ...
    wilsonsamm wilsonsamm December 2009 Chit chat
  • Static vs stacked local variables in z88dkHello everyone. I'm doing a program for Spectrum 48KB with z88dk v1.8 (XX Mar 2008), and I eventually discovered that if your local variables in fun…

    ... this limit; my actual CLEAR is 24000, so this ... use a static local variable as a decreasing counter ... . If you let the variable 'i' to live in ... could do every local variable static by default or ... the decrement control static local variable bug in 'while' loops ...
    Ricardo Cancho Ricardo Cancho April 2010 Development
  • A tidy loader for minigamesThe minigame competition doesn't permit the use of separate loaders like [code]10 LOAD "": RAND USR 32768[/code] The loader must be included in the b…

    ... two variables: a string variable contains all the machine code ...

    8 97 Variable name (a$ in this case ... br /> 9 239 Length of variable (in bytes)
    10 ... example)

    1018 65 Variable name (a)
    1019 0 ...
    ajmoss ajmoss June 2010 Development
  • storing machine code in BASICApart from putting m/c above RAMTOP, which means that it has to be POKEd or LOADed separately after the BASIC program; or putting it in a REM, which …

    ... the PROG area, because the variable letter for a$() is encoded ... /> GO TO 9161
    9161 CLEAR :
    DIM a$(machine_code_length-5 ...
    Battle Bunny Battle Bunny August 2010 Sinclair Basic
  • variable variable names with VAL$It's possible to make the RH-side variable names in a LET statement be themselves variable by using VAL$. Thus, if v$ holds the [b]name[/b] of anothe…

    ... make the RH-side variable names in a LET ... statement be themselves variable by using VAL$. Thus, ... [b]name[/b] of another variable, then:
    [b]LET ... assign the content of the variable named in v$.
    ... make the LH-side variable name in a LET statement ...
    Battle Bunny Battle Bunny October 2010 Sinclair Basic
  • Any MCODE programmers fancy a challenge?Hi Folks, I have been using the Micro-Print utility in the archive and found it to be really good. It is the one that provides 32, 36, 42, 51, 64 a…

    ... the name of the attribute variable name changes from AT to ... MCODE print routine
    150 CLEAR 64267
    160 LOAD "MicroPrint ... /> 170 REM POKE changes attribute variable from "at" to "ar"
    Paddy Coleman Paddy Coleman November 2010 Development
  • Z88DK/SP1 library u_malloc() questionHi All, It may possibly be more appropriate for me to post this on the Z88DK forum, but I know quite a few WoSSers have used Z88DK, so here goes:- …

    ... />
    // Attach C Variable to Sprite Graphics Declared in ... zx_border(2);

    //clear screen
    putchar(12);

    // Attach C Variable to Sprite Graphics Declared in ... zx_border(2);

    //clear screen
    putchar(12);
    Digital Prawn Digital Prawn December 2010 Development
  • Variable resistorI have a problem with my speakers - the treble is much much too quiet in comparison to the bass. Or you could say, the bass is much to loud for the r…

    ... mending this by putting a variable resistor on the wire that ...
    wilsonsamm wilsonsamm August 2011 Chit chat
  • automatic relocating of non-relocatable codeI was pondering upon the problem of changing absolute addresses used by CALL, JP, etc. when code is moved, without reassembling at the new location; …

    ... to save SP to a variable location, either to a register ... /> [code]
    LOCATE: equ 25000 ;CLEAR LOCATE-1
    STACKP: equ ...
    Battle Bunny Battle Bunny August 2011 Development
  • 128k RAM paging from BASICI'd always thought that OUT had to be used to page RAM, which from BASIC would be an "OUT 32765,ddd" command, although I don't know if just doing tha…

    ... it says that doing a "CLEAR 49151" (ie. to just below ... +n" (being the BANK_M system variable) will switch in page 'n ...
    Battle Bunny Battle Bunny August 2011 Sinclair Basic
  • AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…

    ... . The demo listing makes this clear.

    [code]
    ... br /> call EX1NUM ;stack 1st variable
    pop af ;A =$00 ... br /> call EX1NUM ;stack 2nd variable
    call FPTOBC ;C =2nd ...
    Battle Bunny Battle Bunny October 2011 Sinclair Basic
  • Indirect Variable AssignmentHere's another wacky routine. This allows assignment of values to variables where the source & destination variables can themselves be defined in var…

    ... />
    So, for example, variable names can be constructed at ... it wrong will give "Undefined variable" or "Invalid argument" or ... 23698

    ;Indirect Variable Assignment
    ;PRINT USR indirect ... it must be a string variable or expression
    ; ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • Quick question about CLEAR...Hi Folks, I should know the answer to this but I wanted to make sure I understand totally. If I execute a CLEAR then I know it lowers RAMTOP to the…

    ... totally. If I execute a CLEAR then I know it lowers ... +1 e.g.

    CLEAR 60000

    means the ...
    Paddy Coleman Paddy Coleman January 2012 Sinclair Basic
  • storing machine code in BASICA couple of years ago I posted a routine for storing machine code between PROG & VARS, based on an idea in Toni Baker's "Mastering Machine Code". Thi…

    ... the PROG area, because the variable letter for a$() is encoded ... old CODE space
    9161 CLEAR : GO SUB 9164: INPUT "Old ... new CODE space
    9162 CLEAR : GO SUB 9164: INPUT "New ...
    Battle Bunny Battle Bunny January 2012 Sinclair Basic
  • SpecBAS 0.730 Now available!Well, I felt I should release SpecBAS as it is right now - my new son has been born (this one survived! \o/ ) and when he comes home I'll have very l…

    ... 't rely on state or variable information are interpreted at line ... .
    Mouse clicks can now clear error messages (and the (C ...
    Dunny Dunny February 2012 Sinclair Miscellaneous
  • .tapein load crashes if no CLEAR performed first(!)Hi Guys, Can anyone explain the following as it has be stumped: I came across an unexpected crash today when loading in a 16K block of code at 8000…

    ... the following:
    [code] 10 CLEAR 32767
    20 LOAD "" CODE ... don't bother performing the CLEAR during development as I keep ... well clear of RAMTOP.

    However ... />
    If I do the CLEAR 32767 before the LOAD "" CODE ...
    BloodBaz BloodBaz August 2012 Hardware
  • 40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…

    ... a,(characterno) ; getscharater from charterno variable
    sub 32
    ld ... ,128
    overscratch ; used to clear space before printing to screen ...
    uglifruit uglifruit August 2012 Development
  • A Miscellany of Dangerous TipsHere's a selection of ideas for using some of the more obscure system variables which I've found handy on occasion. They can be very convenient if us…

    ... or more LETs after a CLEAR and then VARS moved to ... preserving variables from RUN and CLEAR and will be SAVEd along ... not affected by RUN or CLEAR. The aforementioned Chapter 9 describes ... error return", held in system variable ERR_SP. Evaluating that address and ...
    Battle Bunny Battle Bunny October 2012 Sinclair Basic
  • SE Basic IV 4.1 Buffy previewSE Basic IV 4.0 Anya was released back in December 2012. You can read about it here: [url]http://cheveron.github.io/sebasic4/[/url] But here's some …

    ... days of terminals, CONTROL would clear bits 6 and 7. However ... also use reserved words as variable names by using CAPS LOCK ...
    chev chev July 2013 Sinclair Basic
  • MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …

    ... #, a=ACTION table#
    12 CLEAR 62999: LET ORG=FN p ... = NPC guarding
    ; 5 = extending (variable length) block
    ; 6 = sliding ...
    Battle Bunny Battle Bunny September 2013 Sinclair Basic
  • Clear the screen from assemblerI want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is p…

    I want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is possible. Can anyone advise on how to call this command or some similar routine to clear the screen?
    Mr Millside Mr Millside November 2013 Development
  • Clear command in z80Hi, How would I replicate what the basic clear command does in z80? Do I need to change the stack pointer as well as setting ramtop (23730)? If I se…

    ... I replicate what the basic clear command does in z80? Do ... point instead and do a clear command and then randomize back ...
    Speccy_James Speccy_James February 2014 Development
<1234567…34>

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